How long does it take for a Traffic Advisory (TA) and Resolution Advisory (RA) to populate before a potential collision?

The correct answer indicates that Traffic Advisories (TA) take 35-45 seconds and Resolution Advisories (RA) take 20-30 seconds to populate before a potential collision. This timing is critical for pilots to have adequate information for maintaining safety in the airspace. The TA provides early warning of potential conflicts in traffic, allowing pilots to assess their situation and make necessary adjustments, while the RA provides more direct instructions if the situation requires immediate action to avoid a collision.

The timeframes provided in this choice are based on the operational standards of the Traffic Collision Avoidance System (TCAS), which is designed to alert pilots about nearby aircraft that may pose a threat. Understanding these timeframes helps pilots plan their responses to advisories effectively, ensuring timely compliance to avoid risks.

In contrast to the other choices, the chosen answer accurately reflects the operational data regarding TA and RA times, emphasizing the importance of timely information in aviation safety and situational awareness. This knowledge equips pilots to react appropriately to advisories, maintaining safe distances from other aircraft in a congested airspace.